Circuit/System Testing
- Ignition Off - Disconnect K59 Starter/Generator Control Module X2 connector.
- Ignition On - Test for 8 to 18 V between the test points: K59 Starter/Generator Control Module X1 connector accessory voltage circuit terminal 2 & Ground
- If not within the specified range, test the accessory voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal replace the K59 Starter/Generator Control Module.